Request confirmation if SPIM & SPIS drivers in nCS are working on interrupts

Question

Hi, 
 
 For my application I am supposed to evaluate if nordic SPIM & SPIS drivers are working on interrupts..? In the driver file "nrfx_spim.c" I observed the below code: 
 
 Is this NRFX_IRQ_ENABLE actually interrupts enabling at the SPIM driver..? 
 
 How can I confirm if nrfx SPIM & SPIS drivers are working on interrupts..? I need to prove for the sake of development & design. Kindly help. 
 
 Thanks, 
 Ubaid

Ubaid_M · Accepted Answer

Hello haakonsh , 
 
 Thanks for the confirmation 
 haakonsh said: In irq_handler() the driver can read f.ex the EVENTS_END register through the following call nrf_spim_event_check(p_spim, NRF_SPIM_EVENT_END).

haakonsh · Answer

See f.ex: #if NRFX_CHECK(NRFX_SPIM0_ENABLED)
void nrfx_spim_0_irq_handler(void)
{
 irq_handler(NRF_SPIM0, &m_cb[NRFX_SPIM0_INST_IDX]);
}
#endif 
 nrfx_spim_0_irq_handler is the ISR connected to the SPIM0's IRQ. The peripheral HW has only one IRQ, and that IRQ can be connected to the events that the HW peripheral can generate through the INTENSET register. In irq_handler() the driver can read f.ex the EVENTS_END register through the following call nrf_spim_event_check(p_spim, NRF_SPIM_EVENT_END). Also: The tasks and events of the peripherals can be used together with PPI — Programmable peripheral interconnect to create state machines that operates entirely without any CPU use. F.ex, you can configure a TIMER's COMPARE event to trigger the SAMPLE task of the SAADC, and you can further connect the SAADC's END event to the SPIM's START task. Thereby effectively streaming ADC data over SPI without a single IRQ being fired, all with the help of PPI EasyDMA.

Request confirmation if SPIM & SPIS drivers in nCS are working on interrupts

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